Turbonetics Delta Mark II waste gate

EmptyGarage · 03-22-2012, 02:36 PM

Waste Gate is a Turbonetics Delta Mark II waste gate.

I'm boosting over 1 bar and would like to know what this spring is intended to release at. Nothing on spring identifies strength. Its gold coloured! Anybody familiar with these springs?

fredmeister · fredmeister's Garage

I dont want to bust your bubble but that is not much of a spring. It does not have enough coils to really function properly. Plus the wastegate unit in your photos does not look like the best design out there.
I would suggest either installing a stock OEM wastegate unit or a Tial which has a great reputation. You dont want to mess around with this important component of your engine as a malfunction is very costly.

EmptyGarage · 03-22-2012, 04:00 PM

Are you saying that Turbonetics is not a trustworthy product?

Quote:

Originally Posted by fredmeister

I dont want to bust your bubble but that is not much of a spring. It does not have enough coils to really function properly. Plus the wastegate unit in your photos does not look like the best design out there.
I would suggest either installing a stock OEM wastegate unit or a Tial which has a great reputation. You dont want to mess around with this important component of your engine as a malfunction is very costly.

fredmeister · fredmeister's Garage

Hey dont put words in my mouth. I was saying that that wastegate you took a picture of and spring do not look like a good design. There are better designed units out there like OEM that would be a better choice is all.
You sound offended, I was not intending to. Just really trying to offer you helpful advice.

EmptyGarage · 03-22-2012, 04:35 PM

...just saying that it's a Turbonetics product with an original spring. I appreciate your advice.

I'm really looking for someone to chime in who is familiar with this unit and comment if the springs are colour coded like other manufacturers or if there is other way to identify the strength.

stup · 03-23-2012, 06:06 PM

HI,
Not familiar with your turbotech wastegate but you could put pressure to the feed line and see what pressure the valve cracks open at to confirm spring pressure rating.
Your overboosting could be due to exhaust gases being strangalated before they are being released due to poor wastegate pipe design or even your dump pipe after WG being too small a diameter etc

WERK I · WERK I's Garage

emptyGarage,
Could you describe your exhaust system? Factory headers, after-market....etc.
Also, do you have a wastegate muffler attached to the dump port?
What size is the wastegate 46mm, other?
Has it always over-boosted with that wastegate?
I'm with Stu, I think the exhaust bleed-off system might be undersized or of poor design.

Bisimoto · 03-23-2012, 08:56 PM

I use Turbonetics parts exclusively with impeccable results. Turbonetics also supplies the US military, and that fact was huge when deciding to use thier units in my Porsches.
The Deltagate Mark II is discontinued, but I kept notes on the spring colours, and corresponding PSI values:
3 PSI spring: green
5 PSI spring: blue
7 PSI spring: silver
9 PSI spring: black

Based upon your photo, you have a 7 psi unit. I hope that helps.

WERK I · WERK I's Garage

Quote:

Originally Posted by Bisimoto

I use Turbonetics parts exclusively with impeccable results. Turbonetics also supplies the US military, and that fact was huge when deciding to use thier units in my Porsches.
The Deltagate Mark II is discontinued, but I kept notes on the spring colours, and corresponding PSI values:
3 PSI spring: green
5 PSI spring: blue
7 PSI spring: silver
9 PSI spring: black

Based upon your photo, you have a 7 psi unit. I hope that helps.

7psi? That's half a BAR.

EmptyGarage, Do you have an electronic or mechanical boost control somewhere? Follow those two lines coming off the wastegate and see where they go. Provide some photos once you're there and share with us.

EmptyGarage · 03-26-2012, 02:27 PM

Quote:

Originally Posted by WERK I

7psi? That's half a BAR.

I'm on the road this week so can't work on car but...

As far as colour of spring goes I'm wondering if the black splashes of paint on my spring mean that my spring is 9 Lb. Do turbonetics springs have a solid colour or do they paint the silver and green on an otherwise brass look finish?

EmptyGarage, Do you have an electronic or mechanical boost control somewhere? Follow those two lines coming off the wastegate and see where they go. Provide some photos once you're there and share with us.

I do have a mechanical boost control. According to Turbonetics the manual control should adjust from the original spring strength up to 2 times the strength. So my losest setting should be 7 or 9 depending upto 14 or 18 lbs. What I actually see is 16 - 22 lbs.

Before anyone panics, The car has major modifications and it is possible that the PO actually wanted to boost 1.2 to 1.5 bar. I don't so I'll bring that down to under 1 bar or 14 lbs.

WERKS Wrote:

Could you describe your exhaust system? Factory headers, after-market....etc.
Also, do you have a wastegate muffler attached to the dump port?
What size is the wastegate 46mm, other?
Has it always over-boosted with that wastegate?
I'm with Stu, I think the exhaust bleed-off system might be undersized or of poor design.

I have after market headers, heat with exhaust out right side and waste out left side. After wastegate is a short pipe (you can see on photo) that runs into a 4 inch SS pipe our left side. The 4 inch SS matches the exhaust out pipe to give ecstatically good looks to rear end!! No wastegate muffler.

I believe wastegate is only 38mm

Yes car has always boosted 1.2 - 1.5. I have been very conservative driver and PO spent $$$$ to set car up like it is so I'm hoping he did things right. Car sees strong. Will finish later..meeting people for super and got to go.

EmptyGarage · 03-26-2012, 04:50 PM

[QUOTE=EmptyGarage;6648290]I do have a mechanical boost control. According to Turbonetics the manual control should be adjustable from the original spring strength up to 2 times the strength. So my lowest setting should be 7lbs or 9lbs depending on the actual spine up to 14 or 18 lbs. What I actually see is 16 - 22 lbs.

Before anyone panics, The car has major modifications and it is possible that the PO actually wanted to boost 1.2 to 1.5 bar. I don't want that much boost........ so I'll bring that down to under 1 bar or 14 lbs.

WERKS Wrote:

Could you describe your exhaust system? Factory headers, after-market....etc.
Also, do you have a wastegate muffler attached to the dump port?
What size is the wastegate 46mm, other?
Has it always over-boosted with that wastegate?
I'm with Stu, I think the exhaust bleed-off system might be undersized or of poor design.

I have after market headers with heat and the exhaust exits out right side and wastegate out left side. After the wastegate is a short pipe (you can see on photo) that runs into a 4 inch SS pipe out left side. The 4 inch SS matches the exhaust out pipe to give ecstatically good looks to rear end!! No wastegate muffler.

I believe wastegate is only 38mm

Yes car has always boosted 1.2 - 1.5. I have been very conservative driver, and PO spent $$$$ to set car up like it is so I'm hoping he did things right.

The 1.2 boost is every constant so I'm thinking that it is designed that way. I would think that if it was undersized or poor design I would get a twitchy needle on boost gauge, it goes to 1.2 and doesn't move.

I'm considering the idea that the spring is a a custom 11 or 12 lbs. I believe an earlier post suggested I put pressure to the gate to see when it opens. I believe that is what I need to do.